Road-grader.



P. YEAGER.

ROAD GRADER.

APPLICATION. FILED MAR. 22. 1915.

Patented Oct. 5

2 SHEETS-SHEEI K 10 6 ijg EH1 f fly WITNESSES r ,1 INVENTOR ATTORNEY P. YEAGER.

ROAD GRADER. APPLICAHON FILEDIMAR. 22.1915.

1,155,862. Patented Oct. 5, 1915.

' 2 SHEETS-SHEET 2.

12 I I r? 24 34 i1 52 W 5- I 31 W J6 X1 9 0 L Z WITNESSES I ATTORNEY PHILIP YEAGER, 0F ORAN, IOWA.

ROAD-GRADER.

Application filed March 2'2. 1915.

, To all whom it may concern:

Be it known that I, PHiLIP YEAGER, a citizen of the United States, residing at Oran, in the countv of Fayette, and State of Iowa, have invented a new and useful Road-Grader, of which the following is a specification. m

This invention has reference to road graders, and its object is to provide a grader whereby a road surface may be smoothed by means of.a diagonally set scraping blade, while all tendency of the scraping blade to move laterally of the line of travel cffectively counteracted.

In accordance with the present invention there is provided a scraperor scraping blade capable of being set at different angles to the line of draft so as to extend crosswise of the direction of travel in a manner to cause dirt caught by the scraper to progress laterally of the line of travel, thus smoothing the road surface and filling all ruts and depositing surplus dirt to one side of the portion of the road bed treated by the scraper. 9

Because of the diagonal set of the scraper there is a continual tendency to shift the scraper blade laterally of the line of travel.

, To overcome this tendency and also to more or less loosen the surface of the road bed where treated by the scraper and to furthermore provide a support for the scraper whereby its depth 'of cut may be regulated, the machine has in front of the scraper a laterally extended series of disks all concaved in one direction so that the disks by the engagement of their peripheral portions with the road bed counteract or oppose any tendency of the scraper to travel sidewise of the main direction of travel.

The invention also contemplates numerous features of improvement in the adjustment of the scraper to the line of travel, means coacting with the disks to uphold the scraper to produce any desired depth of cut, and a seat so arranged that the driver of the vehicle may readily control it without inconvenience despite considerable variations in therelation of the holding disks to the scraper blade.

The invention will be best understood from a consideration of the following detailed description, taken in connection with Specification of Letters Patent.

Serial No. 16,117.

practical form of the invention, the latter 1s not confined to any strict conformity with the showing of the drawings, but may be changed and modified so- .long as such changes and modifications mark no material departure from the salient features of the invention.

In the drawings :Figure 1 is a plan view of a scraper constructed in accordance with the present invention. Fig. 2 is a side elevation of the scraper. Fig. 3 is a longitudinal section, in most part a central longitudlnal section, of the scraper with some parts remote from the general plane of the sectlon also shown, in longitudinal section. Fig. l is a longitudinal section of the disk member. Fig. 5 is a rear view of one end of the scraper blade. Fig. 6 is a detail perspective view showing the manner of connecting a supporting and adjusting 'arc to the series of concave disks. Fig. 7 is a detail perspective view showing the connection of the scraper holding frame with the body of the scraper.

Referring to the drawings, there is shown an elongated scraper l concaved on one face with the top and bottom edges of the scraper substantially parallel. At one end the scraper is formed with a share or tongue 2. Such end of the scraper is in practice usually the forward end since the scraper is customarily set at an angle to the line of draft so that dirt which is gathered by the scraper blade in the usual manner is caused to progress from the forward end of the scraper across the line of travel to the rear end of the scraper from which the accumulated dirt readily escapes. Such a scraper blade will level off a road bed, cutting down the ridges and depositing the gathered dirt into the ruts, so that where passed over by the scraper the road surface becomes sensibly smooth or level from side to side.

Secured to the back of the scraper blade 1 by rivets 3- or otherwise are straps 4, there being a strap near each end of the scraper. Each strap is extended above the upper edge of the scraper and is there bifurcated and perforated as shown at 5. Connected to the bifurcated end 5 of each strap 4 is a bar 6 having aseries of holes 7 therethrough for the passage of a bolt 8 constituting the means for connecting the bar 6 to the end 5 of the strapl. The bar 6 terminates at one end in a sleeve 9 constituting a journal support for a Standard 10 held to the sleeve 9 lPatented Oct. 5, 1915.

by set collars 11 on opposite sides, these collars being held in place by respective set screws 12. Each standard is substantially upright and carries at its lower end a caster whee 13 in trailing relation to the scraper 1.

Near opposite ends of the scraper and preferably at the points backed up by the straps 1 are yokes or eyes 11 projecting on the front or concave face of the scraper about midway of the height thereof. Each yoke 11 may be in the form of a U bolt with the legs extending through the scraper blade 1 and through a strap plate 15 at the rear of the blade with the strap plate extending over the strap i, or any other arrangement suitable for the purpose may be provided.

Connected to the bolts or yokes 14 are the respective ends of a frame 16 in the form of an elongated bar, preferably though not necessarily a flat bar, having a curved front end 17 provided with. a series of spaced perforations 18'. The curved end 17 is in the form of an arc for a purpose to be described. Each bar 6 has the end remote from the sleeve 9 preferably bent toward the frame 16 and terminates in a tongue 19 extending through a perforation 2.0 in a suitable part of the frame 16, so that the bars 6 participate in any movements of the frame 16 causing the caster wheels 13 to rise and fall in accordance with the movements of the frame 16 There is also provided a series of concave disks 21 mounted on a rod or spindle 22 to turn freely thereon and held in spaced relation one to the other by spacer sleeves on the rod 22. The rod 22 is mounted at the ends in the corresponding ends of legs 21 of a yoke frame 25. the said frame being normally in overriding relation to the series of disks and the lower ends of the legs 25- are perforated as shown at 26 in Fig. 6 for the passage of the rod Each leg 21 of the frame 25 near the passage 26 and on one side of the upright center line of the leg has a perforation 27 therethrough in which there is lodged a corresponding hooked end 28 of a curved bar 29 conforming in curvature to the curved end 17 of the frame 16. This bar may have per forations matching the perforations 18 of the frame 16. so that the bar 29 and the curved portion 17 of the bar 16 may be connected together by a bolt 30 or a suitable number of such bolts, if desirable.

Connected to the series of disks 21 intermediately of the length of said series is a pole 31 formed at the end connected to the series of disks with a yoke strap 32 encircling an appropriate one of the spacer sleeves '23. The bolt 30 besides traversing a perforation 13 of the frame 16 and a corresponding perforation of the frame also traverses the pole 31 at an appropriate point.

i j ustment within Connected at one end to the pole 31 by a bolt 33 is a strap 31 having the other end formed into a hook adapted to engage in a perforation 36 near one long edge of the yoke The other long edge of this yoke 25 has other perforations 37 formed therein and engaglng in any one of these perforatlons is a hook end 38 formed on a plate 39 appropriately bent or shaped to rest upon the top edge of the scraper blade 1. Blounted on the plate 39 is a seat standard 10 carrying a seat 11 which may conform to seats as usually provided in machines of the character of the present invention. The plate 39 at the end remote from the hook 3S'is laterally expanded so as to provide broad bearing surface where resting upon the up per edge of the scraper 1.

In the operation of the device the curved bar 29 being connected to the pole 31 at an intermediate point and at the ends to the legs 21 of the yoke the series of coma 1* disk rollers 21 have their aXes of rotation substantially perpendicular to the length of the pole 31 and therefore. to the direction of travel of the machine. The disk rollers 21 all face in one direction with the concave faces directed toward that side of the machine where the forward end of the scraper 1 is located. The scraper 1 is set at any desired angle to the line of draft, which angle is usually a small angle, by arranging the bolt 30 through that one of the holes 18 which will hold the frame 16' and the scraper 1 carried thereby at the angle desired.

The scraper 1 is supported in front of'its cutting edge by the laterally extended series of disks 21 and is supported at the rear of its cutting edge by the caster wheels 13. which latter are arranged near the ends of the scraper.

The position of the stems or standards of the caster wheels is determined b the set collars 11 and the depth of cut of the scraper is readily determined by the position of the caster wheels which if lowered decrease the depth of cut of the scraper and if raised increase such depth of cut.

The degree of inclination of the scraper 1 with reference to the line of draft is readily changed as desired by taking out the bolt 30 and moving the frame 16, so that another passage 18 is brought into line with the customary position of the bolt '30 through the pole 31, the other parts of the mechanism readily acconnnodating themselves to {the changed relation thus brought about. The seat supporting plate 39 permits such adrea sonable range. For some purposes, as, for instance, weighting the scraper blade. one or more plates 39 may be provided and such plates are hooked in :the other perforva tions 37. However the scraper blade may be related to the line of draft, there is, except when the scraper blade is perpendicular to the line of draft, a tendency of the scraper blade to move laterally of the line of draft toward the side of the machine occupied by the forward ,end of the inclined blade. This tendency is wholly overcome by the concave disks 21 of which one or more will bite into the road bed and so counteract the sidewisetendency. More over, these disks attack the rough surface of the roadbed to cut and loosen it, whereupon the scraper in engaging such loosened surface meets less resistance than would be the case were the surface of the road wholly untreated before being reached by the scraper. So far as the action of the scraper blade is concerned it need not differ from scraper blades as ordinarily constructed, for the scraper blade like other blades of .like cli aracter smooths off the high places and directs the loosened dirt into rats and thejlike, wherefore the road bed after being traversed by the structure is markedly smooth and free from either protuberances or depressions.

The perforations 7 permit the tilting of the scraper blade on the yokes or eyes 14 toward the upright position which may be found to be desirable where the character of the surface is liable to cause clogging on the lower edge of the scraper if in too slanting a position.

What is claimed is 1. A road grader having a scraping blade, a series of concave disks with the concave faces of the disks all presented toward that side of the machine corresponding to the forward end of the scraper blade, and said series of disks being of a lateral extent to include the greater portion of the length of the scraper blade and constituting the sole support for that portion of the machine in advance of the scraper blade,'draft means for the grader in fixed perpendicular relation to the axis of the series of disks, and connections between the series of disks and the scraper adjustable with relation to the series of disks to vary the inclination of the scraper with respect to the line of draft.

2. A road grader having a scraping blade, a laterally extended series of concave disks with the concave faces all presented toward that side of the machine corresponding to the forward end of the scraper blade, and said disks constituting the sole support for the grader in advance of the blade, a draft pole connected to the mid portion of the series of disks andto the ends of the series in substantially perpendicular relation to the longitudinal axis of the series of disks, and connections between that portion of the grader comprising the pole and series of disks and that portion of the grader including the scraping blade for the adjustment of the angle of the scraping blade with rethe blade to the line of travel of the grader.

lation to the line of draft with the longitudinal axis of the series of disks in constant perpendicular relation to the line of draft.

3. A road grader comprising a scraper blade, supporting wheels for the scraper blade in trailing relation thereto, a laterally extended series of concave disks with the concave faces all presented toward that side of the machine corresponding to the forward end of the scraper blade, a draft pole and connections between the latter and the series of disks for maintaining the latter in constant perpendicular relation to the pole and the line of draft, said series of disks consti tuting the sole support for that portion of the grader in advance of the scraper blade. and connections between the series of disks and the scraper blade with said connections adjustable to vary the diagonal relation of a. A road grader provided with scraping means, a frame connected to the scraping means, a series of rotating members arranged transversely to the line of travel of the scraper and constituting means for counteracting side movement of the scraper. a frame connected to said series of rotating members, and draft means connected to the a series of rotating members andto the frame thereof, the frame connected to the series of rotating members and the frame connected to the scraping means being correspondingly curved and provided with means for connecting them together and to the draft means whereby the angular relation of the scraper to the line of draft may be adjusted.

5. A road grader comprising a scraping member, a series of supporting disks and a carrying frame therefor arranged transversely of the line of travel of the scraper. draft means connected to the series of disks. connecting means between the scraper and draft means for varying the angular relation of the scraper to the line of draft, supporting rollers for the scraper means in trailing relation thereto, and a seat support connected to the frame of the series of disks and extending to and resting upon the scraper and movable with relation to the latter to accommodate the seat support to dif- 11 ferent angular positions of the scraping means.

6. A road grader comprising an elongated scraping blade, a frame connected thereto and extending forwardly from the blade and having its forward portion curved about an axis, a series of disks each concave on one face and all ,having the concave faces presented toward the same side of the scraper,

a connecting frame for the series of disks, 1 another frame connected to the connecting frame and curved in conformity with the frame connected to the scraper blade, a draft member connected to the series of disks and to the curved portions of the frames connected to the scraper blade and disks, respectively, with the frame connected to the scraper blade adjustable with relation to the draft means to vary the angle of the scraper blade to the line of draft, caster heels connected to the scraper blade at the rear thereof and adjustable up and down with relation to the scraper blade to vary its depth of cut, and a seat and support, said support being connected to the frame carrying the disks and resting upon the top edge of the scraper blade.

7, A road grader comprising an elongated scraping blade, a frame connected thereto and extending forwardly from the blade and having its forward portion curved about an axis, a series of disks each concave on one face and all having the concave faces presented toward the same side of the scraper, a connecting frame for the series of disks, another frame connected to the scraper blade, a draft member connected to the series of disks and to the curved portions of the frames connected to the scraper blade and disks, respectively, with the frame connected to the scraper blade adjustable with relation to thedraft means to Vary the angle of the scraper blade to the line of draft, caster wheels connected to the scraper blade at the reartliereof and adjustable up and down with relation to the scraper blade to vary its depth of cut, and a seat and support, said support being connected to the frame carrying the disks and resting upon the top edge of the scraper blade, the draft means and seat being adjustable With relation to the frame carrying the disks in a direction transversely of the line of draft.

In testimony, that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

PHILIP YEAGER.

Witnesses i F. N. HARWOOD, E. E. SHIPPY. 

